EXPOSURE GEOMETRY EFFECTS
eoure s seach ig
woe orther than "diverpeat,
Donar area is Ube searee, all curfeces
L
of the drre J ata individual
AL
re Nrvoxtivelin the sense that the airMs
~
Wes &
ayat
ye
Vasko uP
aA
Tey
cor
cc
@ose meagon GC anywhere in the freee sutsequentiy cceupied by the indi-
vicual is the cane, Et is uUlis ciredese which is measured Ly a field
instmurent;
n
:
it coves uch Lear the same rela tienchip to the sxin dose
and depth dose as dees the atrecose measured in a point source peom=
etry.
Ifa tllateral enposure is incue in the latoratury, one-half the
ecse is wcually civen with one side of the inaivicual fac ing the source
and cnewhiul? with the other, (Whis is a closer arpreach to the fiels
ebry
imat, if the air-cose i bas teen measured at the center of the
prexinal surface as atove, it is stil) nou related tu the depth dose
in
S
way as is the fi
eccses received ty ¢
both the cleud itself and the vatvost coposited on the pround, It is
Lelleved Likely, as discussed in Cpajter 6, that the cloud dose was
&
enby a suail
jart of u. e
send
Srexes
new rnn
wee wr
WN eve a
total dose and that the cose from the plane
tee
2 eres
sontyita: tea
want
sv mesb taw
1
pee webs
Lo
™ I
ate
cs wise
RAL
ee ee
TP REO
RY
UD
asserpticn ef early raxinun activity and short effective fallout time
which was rade in Chapter 6 tor the maatcun dose care,
Alternatively,
if a long fallout actually ccocurred,
the suurce wid have remeined a
cleud lon;er and the cluid volwe, rather than the curface distribetion, would have accounted fer sore of the total desc,
Lt would a: pear that the
cict ticlovicabl etiect,
tL
in either case,
ao s@, rather than the cose measured
mon parazeter in terms of which te pre-e
ines cest existing Gata tacitly aseurce nar-
TP
fisti
Lecomas iryertant in relating
oc unuregeences to known clinical or exj erimens
Lts (he Teroneces ll, 12},